In order to support effective cross-border provision of services, the data intermediation services provider should be requested to send a notification only to the competent authority for data intermediation services from the Member State where its main establishment is located or where its legal representative is located. Such a notification should not entail more than a mere declaration of the intention to provide such services and should be completed only by providing the information set out in this Regulation. After the relevant notification the data intermediation services provider should be able to start operating in any Member State without further notification obligations.